Sorry, I don't understand, can you please give a couple examples and highlight what you want to match.

[a-z] will match lowercase Latin letters (make sure you enable match case from the Search menu).
[. ] will match a dot or space.
[. ]* will match any number of dots and/or spaces.
\b will match a word boundary.

To match a word, that is all lowercase letters and skips starting dots or spaces:
\b[. ]*[a-z]*\b
Note: Please make sure match case is enabled from the search menu.